Really don't know if this is a bug or not, but I lost control of the screen through a series of clicks, and could not recover despite using the view menu and various zoom options, so I don't know if I could repeat the process. Attached is a full screen picture of the event. Please note the big discrepancies - No toolbar on left even when minimizing view; separated panes for the image and the control panels; the third bar down loses the bottom pixels of the text; and my biggest gripe through all of the versions back to 2016 is when I click on VIEW, the menu box displays ZOOM on the first line with an arrow pointing right, but the submenu always is on the left and it requires several attempts to get there as it disappears if the cursor strays from the zoom text line.